Things You'll Need
Instructions
Verify that the unit is plugged in a working power outlet. Turn off the machine's power and let it sit for 30 second before restarting it.
Check for noticeable signs of external damage, including burn marks, water damage or cut wires. The machine won't function if power cables are cut or its controls damaged. Make any necessary repairs or replace damaged components.
Check the motherboard and any other circuit boards for signs of cracked solder, burn marks, loose cables and connectors within the machine. These will typically be present if the machine won't turn on at all. Replace or reattach any damaged or missing components.
Check all fuse banks for blown fuses. If fuses continue to blow, there is most likely a short circuit on one of the boards. Use a multimeter to locate the short. Also use the multimeter to test all cables connecting components to the motherboard.